DENNIS – Three endangered sea turtles that were rehabbed in Quincy have been returned to the warm waters off Cape Cod.

The turtles, with satellite tracking devices, were returned Monday after washing ashore last winter and suffering from hypothermia. They were rehabilitated by the New England Aquarium’s staff.

The aquarium’s rescue department director led a team of biologists and volunteers to Wellfleet to release two green sea turtles and one Kemp’s ridley turtle.

The green turtles, which weigh about 20 pounds, will eventually weigh close to 400 pounds. The other turtle is about 10 pounds, but will get close to 100 pounds.

The satellite tags, which are on the turtles’ shells, will fall off in six to nine months and send back useful information to researchers about where the turtles will migrate and where they live in the winter.

The turtles – “Crackle,” “Snap” and “Tony the Tiger” – were named after breakfast cereals by the rescue biologists.

The turtles released Monday are the last to be released after the most recent stranding season, from last November to December. The strandings are fairly common because the cold-blooded animals can become stunned and hypothermic in the plunging ocean temperatures.

They were rescued by staff and volunteers of the Massachusetts Audubon Society’s Wellfleet Bay Wildlife Sanctuary and then taken to the New England Aquarium’s Animal Care Center, where they were slowly re-warmed. After many months of rehabilitation, they were returned to nearly the location they were rescued from.

More than 1,200 endangered and threatened sea turtles have been rehabilitated and released by the aquarium since the 1990s.